{"cve":"CVE-2026-23080","nvd":{"published":"2026-02-04T17:16:18.750","modified":"2026-06-17T10:20:49.810","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: mcba_usb: mcba_usb_read_bulk_callback(): fix URB memory leak\n\nFix similar memory leak as in commit 7352e1d5932a (\"can: gs_usb:\ngs_usb_receive_bulk_callback(): fix URB memory leak\").\n\nIn mcba_usb_probe() -> mcba_usb_start(), the URBs for USB-in transfers are\nallocated, added to the priv->rx_submitted anchor and submitted. In the\ncomplete callback mcba_usb_read_bulk_callback(), the URBs are processed and\nresubmitted. In mcba_usb_close() -> mcba_urb_unlink() the URBs are freed by\ncalling usb_kill_anchored_urbs(&priv->rx_submitted).\n\nHowever, this does not take into account that the USB framework unanchors\nthe URB before the complete function is called. This means that once an\nin-URB has been completed, it is no longer anchored and is ultimately not\nreleased in usb_kill_anchored_urbs().\n\nFix the memory leak by anchoring the URB in the\nmcba_usb_read_bulk_callback()to the priv->rx_submitted anchor.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-401"],"references":["https://git.kernel.org/stable/c/179f6f0cf5ae489743273b7c1644324c0c477ea9","https://git.kernel.org/stable/c/59153b6388e05609144ad56a9b354e9100a91983","https://git.kernel.org/stable/c/710a7529fb13c5a470258ff5508ed3c498d54729","https://git.kernel.org/stable/c/8b34c611a4feb81921bc4728c091e4e3ba0270c0","https://git.kernel.org/stable/c/94c9f6f7b953f6382fef4bdc48c046b861b8868f"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:22:27.261130201+00:00"},"epss":{"cve":"CVE-2026-23080","score":0.00147,"percentile":0.03918,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}